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Finding the Fourth Proportional to 664.96, 997.24 and 202.76

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Solution

The fourth proportional to 664.96, 997.24 and 202.76 is: 304.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.96 : 997.24 = 202.76 : x
  2. Step 2: Convert to fraction form
    664.96/997.24 = 202.76/x
  3. Step 3: Cross multiply
    664.96x = 997.24 × 202.76
  4. Step 4: Simplify right side
    664.96x = 202,200.38
  5. Step 5: Solve for x
    x = 202,200.38/664.96
  6. Step 6: Final answer
    x = 304.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.